1 files changed, 0 insertions, 75 deletions
diff --git a/cras/src/dsp/crossover2.h b/cras/src/dsp/crossover2.h
deleted file mode 100644
index 9afa0e8a..00000000
--- a/cras/src/dsp/crossover2.h
+++ /dev/null
@@ -1,75 +0,0 @@
-/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef CROSSOVER2_H_
-#define CROSSOVER2_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* "crossover2" is a two channel version of the "crossover" filter. It processes
- * two channels of data at once to increase performance. */
-
-/* An LR4 filter is two biquads with the same parameters connected in series:
- *
- * x -- [BIQUAD] -- y -- [BIQUAD] -- z
- *
- * Both biquad filter has the same parameter b[012] and a[12],
- * The variable [xyz][12][LR] keep the history values.
- */
-struct lr42 {
-	float b0, b1, b2;
-	float a1, a2;
-	float x1L, x1R, x2L, x2R;
-	float y1L, y1R, y2L, y2R;
-	float z1L, z1R, z2L, z2R;
-};
-
-/* Three bands crossover filter:
- *
- * INPUT --+-- lp0 --+-- lp1 --+---> LOW (0)
- *         |         |         |
- *         |         \-- hp1 --/
- *         |
- *         \-- hp0 --+-- lp2 ------> MID (1)
- *                   |
- *                   \-- hp2 ------> HIGH (2)
- *
- *            [f0]       [f1]
- *
- * Each lp or hp is an LR4 filter, which consists of two second-order
- * lowpass or highpass butterworth filters.
- */
-struct crossover2 {
-	struct lr42 lp[3], hp[3];
-};
-
-/* Initializes a crossover2 filter
- * Args:
- *    xo2 - The crossover2 filter we want to initialize.
- *    freq1 - The normalized frequency splits low and mid band.
- *    freq2 - The normalized frequency splits mid and high band.
- */
-void crossover2_init(struct crossover2 *xo2, float freq1, float freq2);
-
-/* Splits input samples to three bands.
- * Args:
- *    xo2 - The crossover2 filter to use.
- *    count - The number of input samples.
- *    data0L, data0R - The input samples, also the place to store low band
- *                     output.
- *    data1L, data1R - The place to store mid band output.
- *    data2L, data2R - The place to store high band output.
- */
-void crossover2_process(struct crossover2 *xo2, int count, float *data0L,
-			float *data0R, float *data1L, float *data1R,
-			float *data2L, float *data2R);
-
-#ifdef __cplusplus
-} /* extern "C" */
-#endif
-
-#endif /* CROSSOVER2_H_ */